MX2021009931A - Metodo de codificacion de video y codificador, decodificador, medio legible por computadora. - Google Patents

Metodo de codificacion de video y codificador, decodificador, medio legible por computadora.

Info

Publication number
MX2021009931A
MX2021009931A MX2021009931A MX2021009931A MX2021009931A MX 2021009931 A MX2021009931 A MX 2021009931A MX 2021009931 A MX2021009931 A MX 2021009931A MX 2021009931 A MX2021009931 A MX 2021009931A MX 2021009931 A MX2021009931 A MX 2021009931A
Authority
MX
Mexico
Prior art keywords
optical flow
flow refinement
current block
obtaining
refinement process
Prior art date
Application number
MX2021009931A
Other languages
English (en)
Inventor
Semih Esenlik
Sriram Sethuraman
Raj A Jeeva
Sagar Kotecha
Original Assignee
Huawei Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of MX2021009931A publication Critical patent/MX2021009931A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/557—Motion estimation characterised by stopping computation or iteration based on certain criteria, e.g. error magnitude being too large or early exit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/117—Filters, e.g. for pre-processing or post-processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H04N19/82—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop

Abstract

Se proporciona un método de codificación de video implementado en un dispositivo de decodificación o un dispositivo de codificación, el método comprende: obtener vectores de movimiento iniciales para un bloque actual; obtener primeras predicciones para un valor de muestra en el bloque actual con base en los vectores de movimiento iniciales; calcular un primer costo de emparejamiento de acuerdo con las primeras predicciones; determinar si un proceso de refinamiento de flujo óptico debiera o no ser ejecutado, de acuerdo con al menos una condición preestablecida, al menos la condición preestablecida comprendiendo una condición respecto a si el primer costo de emparejamiento calculado es igual a o mayor que un umbral; y ejecutar un proceso de refinamiento de flujo óptico para obtener una inter predicción final para el valor de muestra en el bloque actual, cuando se determina que el proceso de refinamiento de flujo óptico debiera ser ejecutado.
MX2021009931A 2019-02-22 2020-02-21 Metodo de codificacion de video y codificador, decodificador, medio legible por computadora. MX2021009931A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201931007114 2019-02-22
PCT/CN2020/076178 WO2020169083A1 (en) 2019-02-22 2020-02-21 Early termination for optical flow refinement

Publications (1)

Publication Number Publication Date
MX2021009931A true MX2021009931A (es) 2021-09-21

Family

ID=72144773

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2021009931A MX2021009931A (es) 2019-02-22 2020-02-21 Metodo de codificacion de video y codificador, decodificador, medio legible por computadora.

Country Status (18)

Country Link
US (1) US20210392334A1 (es)
EP (2) EP3912352B1 (es)
JP (2) JP7271697B2 (es)
KR (2) KR102616714B1 (es)
CN (2) CN113383550A (es)
AU (1) AU2020226553A1 (es)
BR (1) BR112021016270A2 (es)
CA (1) CA3128112A1 (es)
DK (1) DK3912352T3 (es)
ES (1) ES2965083T3 (es)
FI (1) FI3912352T3 (es)
HU (1) HUE063469T2 (es)
MX (1) MX2021009931A (es)
PL (1) PL3912352T3 (es)
PT (1) PT3912352T (es)
SG (1) SG11202107970QA (es)
WO (1) WO2020169083A1 (es)
ZA (1) ZA202106944B (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117546466A (zh) * 2021-06-30 2024-02-09 瑞典爱立信有限公司 重叠解码器侧运动细化
CN117597932A (zh) * 2021-06-30 2024-02-23 瑞典爱立信有限公司 选择性的基于子块的运动细化
WO2023028965A1 (en) * 2021-09-02 2023-03-09 Nvidia Corporation Hardware codec accelerators for high-performance video encoding
US20230186487A1 (en) * 2021-12-13 2023-06-15 Qualcomm Incorporated Vectorized bilinear shift for replacing grid sampling in optical flow estimation
WO2023193769A1 (en) * 2022-04-06 2023-10-12 Mediatek Inc. Implicit multi-pass decoder-side motion vector refinement

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Publication number Priority date Publication date Assignee Title
US20040076333A1 (en) * 2002-10-22 2004-04-22 Huipin Zhang Adaptive interpolation filter system for motion compensated predictive video coding
US10127644B2 (en) * 2015-04-10 2018-11-13 Apple Inc. Generating synthetic video frames using optical flow
CN107925760A (zh) 2015-08-23 2018-04-17 Lg 电子株式会社 基于间预测模式的图像处理方法及其装置
EP3332551A4 (en) * 2015-09-02 2019-01-16 MediaTek Inc. METHOD AND APPARATUS FOR MOVEMENT COMPENSATION FOR VIDEO CODING BASED ON TECHNIQUES FOR OPERATIONAL RADIO RADIATION
CA2995507C (en) * 2015-09-02 2021-05-25 Mediatek Inc. Method and apparatus of decoder side motion derivation for video coding
US11109061B2 (en) * 2016-02-05 2021-08-31 Mediatek Inc. Method and apparatus of motion compensation based on bi-directional optical flow techniques for video coding
US20180199057A1 (en) * 2017-01-12 2018-07-12 Mediatek Inc. Method and Apparatus of Candidate Skipping for Predictor Refinement in Video Coding
WO2018173895A1 (ja) 2017-03-21 2018-09-27 シャープ株式会社 予測画像生成装置、動画像復号装置、および動画像符号化装置
WO2019001741A1 (en) * 2017-06-30 2019-01-03 Huawei Technologies Co., Ltd. MOTION VECTOR REFINEMENT FOR MULTI-REFERENCE PREDICTION
JP7168593B2 (ja) * 2017-07-03 2022-11-09 ヴィド スケール インコーポレイテッド 双方向オプティカルフローに基づいた動き補償予測
US11750832B2 (en) * 2017-11-02 2023-09-05 Hfi Innovation Inc. Method and apparatus for video coding
WO2020103877A1 (en) * 2018-11-20 2020-05-28 Beijing Bytedance Network Technology Co., Ltd. Coding and decoding of video coding modes

Also Published As

Publication number Publication date
CN113383550A (zh) 2021-09-10
KR20210113384A (ko) 2021-09-15
WO2020169083A1 (en) 2020-08-27
JP2023099561A (ja) 2023-07-13
HUE063469T2 (hu) 2024-01-28
ES2965083T3 (es) 2024-04-10
EP3912352A4 (en) 2022-04-20
EP3912352B1 (en) 2023-09-06
PL3912352T3 (pl) 2024-02-26
BR112021016270A2 (pt) 2021-10-13
EP3912352A1 (en) 2021-11-24
EP4243418A2 (en) 2023-09-13
PT3912352T (pt) 2023-11-21
CN114845102B (zh) 2023-07-07
AU2020226553A1 (en) 2021-08-19
KR102616714B1 (ko) 2023-12-20
CN114845102A (zh) 2022-08-02
DK3912352T3 (da) 2023-11-20
SG11202107970QA (en) 2021-08-30
KR20240000638A (ko) 2024-01-02
JP2022521748A (ja) 2022-04-12
JP7271697B2 (ja) 2023-05-11
FI3912352T3 (fi) 2023-11-30
US20210392334A1 (en) 2021-12-16
EP4243418A3 (en) 2023-10-25
CA3128112A1 (en) 2020-08-27
ZA202106944B (en) 2022-09-28

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